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A new automated method for analysis of gated-SPECT images based on a three-dimensional heart shaped model

Lomsky, M; Richter, Jens; Johansson, L; El Ali, Henrik Hussein LU ; Åström, Karl LU ; Ljungberg, Michael LU and Edenbrandt, Lars LU (2005) In Clinical Physiology and Functional Imaging 25(4). p.234-240
Abstract
A new automated method for quantification of left ventricular function from gated-single photon emission computed tomography ( SPECT) images has been developed. The method for quantification of cardiac function (CAFU) is based on a heart shaped model and the active shape algorithm. The model contains statistical information of the variability of left ventricular shape. CAFU was adjusted based on the results from the analysis of five simulated gated-SPECT studies with well defined volumes of the left ventricle. The digital phantom NURBS-based Cardiac-Torso (NCAT) and the Monte-Carlo method SIMIND were used to simulate the studies. Finally CAFU was validated on ten rest studies from patients referred for routine stress/rest myocardial... (More)
A new automated method for quantification of left ventricular function from gated-single photon emission computed tomography ( SPECT) images has been developed. The method for quantification of cardiac function (CAFU) is based on a heart shaped model and the active shape algorithm. The model contains statistical information of the variability of left ventricular shape. CAFU was adjusted based on the results from the analysis of five simulated gated-SPECT studies with well defined volumes of the left ventricle. The digital phantom NURBS-based Cardiac-Torso (NCAT) and the Monte-Carlo method SIMIND were used to simulate the studies. Finally CAFU was validated on ten rest studies from patients referred for routine stress/rest myocardial perfusion scintigraphy and compared with Cedar-Sinai quantitative gated-SPECT (QGS), a commercially available program for quantification of gated-SPECT images. The maximal differences between the CAFU estimations and the true left ventricular volumes of the digital phantoms were 11 ml for the end-diastolic volume (EDV), 3 ml for the end-systolic volume (ESV) and 3% for the ejection fraction (EF). The largest differences were seen in the smallest heart. In the patient group the EDV calculated using QGS and CAFU showed good agreement for large hearts and higher CAFU values compared with QGS for the smaller hearts. In the larger hearts, ESV was much larger for QGS than for CAFU both in the phantom and patient studies. In the smallest hearts there was good agreement between QGS and CAFU. The findings of this study indicate that our new automated method for quantification of gated-SPECT images can accurately measure left ventricular volumes and EF. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
image processing, computer-assisted diagnosis, gated-SPECT, radionuclide imaging
in
Clinical Physiology and Functional Imaging
volume
25
issue
4
pages
234 - 240
publisher
Wiley Online Library
external identifiers
  • wos:000229956800008
  • pmid:15972026
  • scopus:21644456448
ISSN
1475-0961
DOI
10.1111/j.1475-097X.2005.00619.x
language
English
LU publication?
yes
id
f6c0eb2c-a5bd-4c26-977b-c855cababc7e (old id 235862)
date added to LUP
2007-08-03 13:48:16
date last changed
2017-09-24 03:29:13
@article{f6c0eb2c-a5bd-4c26-977b-c855cababc7e,
  abstract     = {A new automated method for quantification of left ventricular function from gated-single photon emission computed tomography ( SPECT) images has been developed. The method for quantification of cardiac function (CAFU) is based on a heart shaped model and the active shape algorithm. The model contains statistical information of the variability of left ventricular shape. CAFU was adjusted based on the results from the analysis of five simulated gated-SPECT studies with well defined volumes of the left ventricle. The digital phantom NURBS-based Cardiac-Torso (NCAT) and the Monte-Carlo method SIMIND were used to simulate the studies. Finally CAFU was validated on ten rest studies from patients referred for routine stress/rest myocardial perfusion scintigraphy and compared with Cedar-Sinai quantitative gated-SPECT (QGS), a commercially available program for quantification of gated-SPECT images. The maximal differences between the CAFU estimations and the true left ventricular volumes of the digital phantoms were 11 ml for the end-diastolic volume (EDV), 3 ml for the end-systolic volume (ESV) and 3% for the ejection fraction (EF). The largest differences were seen in the smallest heart. In the patient group the EDV calculated using QGS and CAFU showed good agreement for large hearts and higher CAFU values compared with QGS for the smaller hearts. In the larger hearts, ESV was much larger for QGS than for CAFU both in the phantom and patient studies. In the smallest hearts there was good agreement between QGS and CAFU. The findings of this study indicate that our new automated method for quantification of gated-SPECT images can accurately measure left ventricular volumes and EF.},
  author       = {Lomsky, M and Richter, Jens and Johansson, L and El Ali, Henrik Hussein and Åström, Karl and Ljungberg, Michael and Edenbrandt, Lars},
  issn         = {1475-0961},
  keyword      = {image processing,computer-assisted diagnosis,gated-SPECT,radionuclide imaging},
  language     = {eng},
  number       = {4},
  pages        = {234--240},
  publisher    = {Wiley Online Library},
  series       = {Clinical Physiology and Functional Imaging},
  title        = {A new automated method for analysis of gated-SPECT images based on a three-dimensional heart shaped model},
  url          = {http://dx.doi.org/10.1111/j.1475-097X.2005.00619.x},
  volume       = {25},
  year         = {2005},
}